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Learn how to install, configure, and operate the Vyatta Network Operating System (Vyatta NOS) and Orchestrator, which help drive our virtual networking and physical platforms portfolio.

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L2TPv3 configuration examples

Configuring a LAC-to-LAC IPv6 tunnel

Sample LAC-to-LAC IPv6 tunnel shows the topology of a sample L2TPv3 LAC-to-LAC IPv6 tunnel configuration. To configure this sample LAC-to-LAC tunnel, perform the following steps in configuration mode:

  1. Configure the L2TPv3 tunnel and LAC cross-connect settings on the R1 router.
    1. Configure the L2TPv3 tunnel settings (Configuring the L2TPv3 settings for a LAC-to-LAC IPv6 tunnel on R1).
    2. Configure the LAC cross-connect settings (Configuring the LAC cross-connect settings on R1).
  2. Configure the L2TPv3 tunnel and LAC cross-connect settings on the R2 router.
    1. Configure the L2TPv3 tunnel settings (Configuring the L2TPv3 tunnel settings on R2).
    2. Configure the LAC cross-connect settings (Configuring the LAC cross-connect settings on R2).

      Figure 1. Sample LAC-to-LAC IPv6 tunnel

      Configuring the L2TPv3 settings for a LAC-to-LAC IPv6 tunnel on R1 shows how to configure the L2TPv3 tunnel interface on R1.

      Table 1. Configuring the L2TPv3 settings for a LAC-to-LAC IPv6 tunnel on R1
      Step Command

      Specify IP as the encapsulation method to use for the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session encapsulation 'ip'

      Specify the cookie string used by R1 (the local router). 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-cookie '12345678'

      Specify the local IP address of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-ip '2001:db:1::1'

      Specify the local session identifier of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-session-id '88776655'

      Specify the local UDP port of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-udp-port '65535'

      Specify the cookie string used by R2 (the remote router). 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-cookie '87654321'

      Specify the remote IP address of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-ip '2001:db:2::1'

      Specify the remote session identifier of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-session-id '88776655'

      Specify the remote UDP port of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-udp-port '65534'

      Commit the configuration. 

      vyatta@vyatta# commit

      Save the configuration. 

      vyatta@vyatta# save

      Configuring the LAC cross-connect settings on R1 shows how to configure the LAC cross-connect settings on R1.

      Table 2. Configuring the LAC cross-connect settings on R1
      Step Command

      Specify the cross-connect parameters of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces dataplane dp0p224p1 xconnect l2tpeth 'lttp20'

      Commit the configuration. 

      vyatta@vyatta# commit

      Save the configuration. 

      vyatta@vyatta# save

      Configuring the L2TPv3 tunnel settings on R2 shows how to configure the LAC cross-connect settings on R2.

      Table 3. Configuring the L2TPv3 tunnel settings on R2
      Step Command

      Specify IP as the encapsulation method to use for the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session encapsulation 'ip'

      Specify the cookie string used by R2 (the local router). 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-cookie '87654321'

      Specify the local IP address of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-ip '2001:db:2::1'

      Specify the local session identifier of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-session-id '88776655'

      Specify the local UDP port of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session local-udp-port '65534'

      Specify the cookie string used by R1 (the remote router). 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-cookie '12345678'

      Specify the remote IP address of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-ip '2001:db:1::1'

      Specify the remote session identifier of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-session-id '88776655'

      Specify the remote UDP port of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces l2tpeth lttp20 l2tp-session remote-udp-port '65535'

      Commit the configuration. 

      vyatta@vyatta# commit

      Save the configuration. 

      vyatta@vyatta# save

      Configuring the LAC cross-connect settings on R2 shows how to configure the LAC cross-connect settings on R2.

      Table 4. Configuring the LAC cross-connect settings on R2
      Step Command

      Specify the cross-connect parameters of the lttp20 L2TPv3 tunnel interface. 

      vyatta@vyatta# set interfaces dataplane dp0p224p1 xconnect l2tpeth 'lttp20'

      Commit the configuration. 

      vyatta@vyatta# commit

      Save the configuration. 

      vyatta@vyatta# save

Last updated: May 7, 2021